Brain Game: Fool Wars

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Here's a screen capture from the opening of Fool Wars. (It's the imported region-free widescreen version, too; cost me a bundle.) My apologies that the image isn't more exciting, but the studio has been relentless about removing all traces of images and audio from the film from online sources.

But that doesn't stop me from turning it into a Brain Game! By changing one letter at a time to create new words - and leaving all other letters in their original positions - how many steps will it take you to convert the word FOOL into the word WARS? I was able to do it in five steps: